Bug 1801836 - Remove no longer necessary 'from __future__' imports. r=linter-reviewers,glandium,webdriver-reviewers,perftest-reviewers,geckoview-reviewers,jld,ahal,owlish,afinder DONTBUILD

Differential Revision: https://phabricator.services.mozilla.com/D165395

Allow-list all Python code in tree for use with the black linter, and re-format all code in-tree accordingly.

To produce this patch I did all of the following:

1. Make changes to tools/lint/black.yml to remove include: stanza and update list of source extensions.

2. Run ./mach lint --linter black --fix

3. Make some ad-hoc manual updates to python/mozbuild/mozbuild/test/configure/test_configure.py -- it has some hard-coded line numbers that the reformat breaks.

4. Make some ad-hoc manual updates to `testing/marionette/client/setup.py`, `testing/marionette/harness/setup.py`, and `testing/firefox-ui/harness/setup.py`, which have hard-coded regexes that break after the reformat.

5. Add a set of exclusions to black.yml. These will be deleted in a follow-up bug (1672023).

# ignore-this-changeset

Differential Revision: https://phabricator.services.mozilla.com/D94045

Backed out 10 changesets (bug 1654103, bug 1672023, bug 1518999) for PanZoomControllerTest.touchEventForResult gv-junit failures CLOSED TREE

Backed out changeset ff3fb0b4a512 (bug 1672023)
Backed out changeset e7834b600201 (bug 1654103)
Backed out changeset 807893ca8069 (bug 1518999)
Backed out changeset 13e6b92440e9 (bug 1518999)
Backed out changeset 8b2ac5a6c98a (bug 1518999)
Backed out changeset 575748295752 (bug 1518999)
Backed out changeset 65f07ce7b39b (bug 1518999)
Backed out changeset 4bb80556158d (bug 1518999)
Backed out changeset 8ac8461d7bd7 (bug 1518999)
Backed out changeset e8ba13ee17f5 (bug 1518999)

Bug 1654103: Standardize on Black for Python code in `mozilla-central`. r=remote-protocol-reviewers,marionette-reviewers,webdriver-reviewers,perftest-reviewers,devtools-backward-compat-reviewers,jgilbert,preferences-reviewers,sylvestre,maja_zf,webcompat-reviewers,denschub,ntim,whimboo,sparky

Allow-list all Python code in tree for use with the black linter, and re-format all code in-tree accordingly.

To produce this patch I did all of the following:

1. Make changes to tools/lint/black.yml to remove include: stanza and update list of source extensions.

2. Run ./mach lint --linter black --fix

3. Make some ad-hoc manual updates to python/mozbuild/mozbuild/test/configure/test_configure.py -- it has some hard-coded line numbers that the reformat breaks.

4. Make some ad-hoc manual updates to `testing/marionette/client/setup.py`, `testing/marionette/harness/setup.py`, and `testing/firefox-ui/harness/setup.py`, which have hard-coded regexes that break after the reformat.

5. Add a set of exclusions to black.yml. These will be deleted in a follow-up bug (1672023).

# ignore-this-changeset

Differential Revision: https://phabricator.services.mozilla.com/D94045

Bug 1654103: Standardize on Black for Python code in `mozilla-central`. r=remote-protocol-reviewers,marionette-reviewers,webdriver-reviewers,perftest-reviewers,devtools-backward-compat-reviewers,jgilbert,preferences-reviewers,sylvestre,maja_zf,webcompat-reviewers,denschub,ntim,whimboo,sparky

Allow-list all Python code in tree for use with the black linter, and re-format all code in-tree accordingly.

To produce this patch I did all of the following:

1. Make changes to tools/lint/black.yml to remove include: stanza and update list of source extensions.

2. Run ./mach lint --linter black --fix

3. Make some ad-hoc manual updates to python/mozbuild/mozbuild/test/configure/test_configure.py -- it has some hard-coded line numbers that the reformat breaks.

4. Add a set of exclusions to black.yml. These will be deleted in a follow-up bug (1672023).

# ignore-this-changeset

Differential Revision: https://phabricator.services.mozilla.com/D94045

The default configuration recommended here[1], while being a good
generic default, it doesn't quite work for mozilla-central as that peeks
the closest ancestor directory with a `Cargo.toml`.

For example, when editing under `servo/components/style`, it'd try to
use that directory as a project root and fail like:

```
    0: Failed to run `cargo metadata --manifest-path /home/emilio/src/moz/gecko/servo/components/style/Cargo.toml`
    1: Error during execution of `cargo metadata`:     Updating crates.io index
       error: failed to get `servo_atoms` as a dependency of package `style v0.0.1 (/home/emilio/src/moz/gecko/servo/components/style)`
       Caused by:
         failed to load source for dependency `servo_atoms`
```

Instead, we want to override it using the `'project_directory'` setting
so that we hit this path[2] and it works out of the box.

[1]: https://rust-analyzer.github.io/manual.html#youcompleteme
[2]: https://github.com/ycm-core/ycmd/blob/63db7ea37910a48addefe028fb5435c602acdec1/ycmd/completers/language_server/language_server_completer.py#L1914-L1916

Differential Revision: https://phabricator.services.mozilla.com/D79938

We need to use the new Settings() API, instead of the deprecated
FlagsForFile. Though in practice we can just delegate to it and it works
out of the box.

Differential Revision: https://phabricator.services.mozilla.com/D72152

By calling into mach instead, which knows how to get to run itself with the
right python version.

Differential Revision: https://phabricator.services.mozilla.com/D17371

Files with .h extension are built with the c compiler by default, which makes
the diagnostics useless. If we know this is a cpp file, hint it so that it
builds it with the right mode.

Differential Revision: https://phabricator.services.mozilla.com/D17372

--HG--
extra : moz-landing-system : lando

MozReview-Commit-ID: HwNnOUThxev

MozReview-Commit-ID: 2HTAftYwZPJ

--HG--
extra : rebase_source : a60cf02829b810b49793fb2b9936554b5130c8c7

Looks like ycmd fails to parse the file if the -march=arm* option is given
Removing it doesn't solve all YCM problems for Fennec, but it allows us
to use JumpToDefinition, GetType and semantic auto-completion.

--HG--
extra : rebase_source : beacdc99b7e698d6ab497c06c2c26b6a49c72d5e